Talking machine



Sept, 1, 1931. J. GEORGE ET AL TALKI NG MACH I NE Filed May 31. 1929 2Sheets-Sheet 1 Sept. 1, 1931. J. GEORGE ET AL 1,321,632

I TALKING MACHINE Filed'M ay 51. 1929 2 Sheets-Sheet 2 M we 10 MM win:0d .0!

I W, Mano TJAAZZEW (Biol-mgr.

Patented Sept. 1, 1931 UNITED STATES PATENT OFFICE JOHN ISAAC GEORGE, OFHAYES, AND EDWARD CHIFFEY, OF SOUTH HARROW, ENG- LAND, ASSIGNO'RS, BYMESNE ASSIGNMENTS, TO RADIO CORPORATION OF AMERICA, OF NEW YORK, N. Y.,A GORTORATION OF DELAWARE TALKING MACHINE Application filed May 31,1929, Serial No. 367,466, and in Great Britain July 11, 1928.

ord, and todrive mechanism for ejecting the played record and feeding anew record to the playing position.

According to the invention a talking machine is provided having twomotors one of which is arranged to drive the turntable at:

all times while the other is stationary during ordinary playing, and isbrought into action so that its drive is added to that of the main motoronly when work in addition to the driving of the turntable is to beperformed. The second or auxiliary motor is preferably geared to themechanism, which effects the I additional operations, in such a mannerthat the said mechanism is always tending to move under the urge ofthat'motor. Thus the drive of the second motor commences to take effectas soon as the mechanism is freed to move.

The invention is illustrated in the accompanying drawings as applied toan automatic talking machine of the kind in which the various automaticoperations are effected through cams on a cam shaft which is rotatedwhen one record has been played and another is to be substituted, tocarry out a cycle of automatic operations.

In the drawings, Fig. 1 is a plan view of the two motors arranged withina single casing, the casing cover being removed.

Fig. 2 is a plan View with the casing cover in position and showing themethod of coupling the motors to the mechanism to be driven.

Fig. 3 is a view in elevation.

Referring to the drawings, 1 and 2 represent the two spring barrels of adouble spring motor of ordinary type, the spindles .3, 4 of which aremounted in bearings in the body 7 5 and cover 6 of a motor casing.

The barrels 1, 2 are coupledin the usual manner'bygears 7, 8 and theusual turntable 11, 12 at the lower end of an intermediate spindle 13,and a gear wheel 14 at the lower end of the turntable spindle 9.

On the turntable spindle 9 (Fig. 1) is also carried a spiral pinion 15which engages and drives a centrifugal speed governor 16 of usual formmounted in bearings in the casing.

The automatic operations are carried out in known manner by means ofcams (not shown) on a cam shaft 17 mounted in bearings on the machineand the cam shaft 17 is driven from the turntable spindle 9 through agear train which'includes a clutch adapted to "be operatedintermittently to transmit drive from the spindle 9 to the gear train.

The clutch comprises a plate 18 freely mounted on the spindle 9 and acurved lever 19 pivotally'mounted at 20 on the plate 18. A spring 21 isconnected between the curved lever 19 and a pin 22 on the plate 18 andthis spring tends to move the lever 19 about itspivot 20 into a positionwhere a tooth 23 on the lever engages between teeth of a toothed wheel24 pinned to the turntable spindle 9. The plate 18 is normally that isto say during playing of the machine, held stationary in the positionshown in Fig. 2,

with the tooth 23 disengaged from wheel 24 by the engagement of ,theendof lever 19 with the end of a lever 25 pivoted at 26 on the machine. Thelever 25 is adapted to be rocked at intervals inknown manner, as by areversal of the direction of the sound arm when the end of a record isreached, to permit lever 19 to rock under the pull of spring 21 and theclutch to be put in.

When the clutch is in, the drive is transmitted from spindle 9 to thecamshaft 17 by way of a gear wheel 27 formed on the underside of plate18 intermediate gear wheels 28, 29 integral with one another and a gearwheel 30 rigid with the cam shaft 17.

The auxiliary motor comprises a spring barrel 31 on a spindle 32 mountedin bearings in the casingand on the. lower side of the barrel 31 iscarried a gear wheel 33 which meshes with a gear 34 at the lower end ofa spindle 35 also mounted in hearings in the casing. The upper end oi":spindle 35 extends above the casing cover 6 and carries, rigidly mountedthereon, a gear wheel 36 (Fig. 2) which meshes with the gear wheel 30rigid with the camshaft 17. It will thus be seen that while the machineis playing and the clutch is out as shown in Fig. 2, the

auxiliary motor 31 is held stationary by vir- 4 tue of its connectionthrough the gearing 33,

r 34, 36, 30, 29,28, 27 with the stationary clutch plate 18. Immediatelylever 25 is rocked and lever 19 moves about its pivot 20 to clutch theplatelS to spindle 9, camshaft 17 begins to rotate and the auxiliarymotor 31 commences to drive.

Means may be provided to permit both the main and auxiliary motors to bewound up together by means of one winding crank, such means being fullydescribed in our copending application-Serial No. 367,465, filed "May31; 1929,

We claim:

1. In a talking machine of the type embodyi-ng a turntable and automaticmechanism for performing; operations additional to 1 driving saidturntable, the combination of amotor drivingly connected with saidturntable, means for drivingly connecting said motor with saidmechanism, and anauxiliary motor drivingly connected with saidmechanisln and adding its drive to that of said first named motor whensaid mechanism is in operation.

2. In a talking machine of the type emlbodyina a turntable and automaticmecha- Insm for performing operations additional to drivingsaidturntable, the combination of a spring motor drivingly connectedwithsaid turntable, means for drivingly connecting said motor with saidmechanism, and an auxiliary spring motor driving'ly connectedwith saidmechanism and adding its drive to that of said first motor when saidmechanism is in operation.

3. In a talking machine of the type embodying a turntable and automaticmechanism for performing operations additional to driving saidturntable, the combination 7 ota motor drivingly connected with saidturntable, means for drivingly connecting said motor with saidmechanism, and an auxiliary'spring motor drivingzly connec ed to saidmechanism and held stationary thereby'when said mechanism is out ofoperation,

said member is drivingly connected with and driven by said first namedmotor.

6. In a talking machine, a turntable spin die, a d riving motorconnected to rotate said tur" table spindle, rotatable member forperforming operations in addition to rotating said spindle, means fordrivingly connecting said rotatable member and motor, and a secondaryspring); motor geared to said rotatable member so that it always tendsto drive said member.

7. In a talking machine, a turntable spindlega drivinginotor connectedto rotate'said spindle, a rotatable member for performing operationsadditional to rotating said spindle, means-tor clutching said rotatablemember to said spindle, and a secondary spring motor drivingly connectedwith said rotatable member, said spring motor tending to actuate saidmember to perform said operation but being held by said member when thelatter is declutched from said spindle, whereby the drive of thesecondary motor is added to that of the driving motor when saidrotatable member is clutched to said spindle.

In testimony whereof we have signed our names to this specification.

' JOHN ISAAC GEORGE.

EDYVARD CHIFFEY.

